Hill and upland sheep farming in the UK, New Zealand, and elsewhere involves keeping sheep on large open ranges with limited human contact. The welfare challenges of extensive sheep systems differ from intensive farming but are equally important.
Extensive hill sheep farming creates welfare challenges arising from the difficulty of monitoring and treating individual animals in large open environments. Flystrike causing maggot infestation of living skin causes extreme suffering and death if not detected early. The welfare problem is the gap between detection and treatment in extensive systems where individual inspection is infrequent. Internal parasites cause chronic malnutrition and immune suppression. Lameness from footrot is painful and progressive without treatment. Extended walking on rough terrain with lameness causes substantial welfare harm. Weather mortality during late spring snowstorms affects newly born lambs and their mothers. Good stockmanship in extensive systems requires higher frequency monitoring, particularly during lambing, to identify and treat welfare problems before they cause prolonged suffering.